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"Science and science fiction, how do you even distinguish the two?"
- Jerry Pournelle
 |
| Sentry Trees | ||
| A set of trees that will allow only those with the safe signal to pass. |
At this point in the story, Aile Farr, biologist from Earth, is about to get his first real look at Iszc technology with his host, Zhde Patasz.
| The glide-car slowed, coasted toward the beach, and halted twenty feet offshore. Uder Che, the architect, jumped into the knee-deep water and cautiously walked ashore, carrying a black box. The trees reacted to his presence, at first leaning toward him, then recoiling and unlacing their branches. After a moment there was a gap wide enough for the glide-car, which now proceeded across the beach and through the gap. Uder Che followed and boarded the car; the trees once more joined branches to create an impenetrable tangle.
Zhde Patasz explained that, "The trees will kill anyone who attempts to pass without manifesting the proper safe-signal, which is radiated from the box. In the past, planters often mounted expeditions against each other - no longer the case, of course - and the sentry trees are perhaps not strictly necessary. But we are a conservative lot and maintain our old customs. |
| From The Houses of Iszm,
by Jack Vance. Published by Better Publications in 1954 Additional resources -
|
Trees or bushes with interlaced branches have been used for centuries as a kind of barrier; at least one ninth century French king complained of the construction of unauthorized haies et fertés - hedgerows made of interlaced hawthorne branches.
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